In one aspect, the polar dielectric material is as lead zirconate titanate (PZT) and the electrodes are platinum, though other materials are contemplated within the scope of this invention, such as polar dielectric material comprised of BaxSr1-xTiO3 (barium strontium titanate) or Bi4Ti3O12 (bismuth titanate) films, or electrodes comprised of gold, iridium oxide, or other conductive oxides such as